Mr. Justice FIELD, after stating the facts as above, delivered the opinion of the court.

1

By the Code of Oregon the findings of the court in an equity case of this kind are as conclusive as similar findings would be in an action at law. Hill, Ann. Laws Or. § 397. They must therefore be taken as correct in the disposition of the question before us, they not having been set aside or qualified by any subsequent action of the court below. And upon them it is contended that the amendment to the declaratory statement of the defendant made in 1884, by which he was enabled to include within it the land in controversy, never occupied or improved by him, but at the time in the possession of the plaintiff, was in effect a second declaration of a pre-emptive right to a different tract from the one originally claimed by him, and was allowed in disregard of the express prohibition of the statute, (Rev. St. § 2261,) or upon a plain misconstruction of its provisions, and gave no jurisdiction to the land department to treat the land thus included as part of his pre-emption claim; and that, but for the amendment, the land would have been awarded to the plaintiff. It is objected to this contention that the question as to the defendant's right as a pre-emption claimant to the land in controversy was a matter to be determined by the land department, where it was considered. It is true the determination of that department in matters cognizable by it in the alienation of lands under the laws of the United States cannot be collaterally impeached, where its enforcement is sought. In ejectment the question always is who has the legal title for the demanded premises, not who ought to have it. In such cases the patent of the government issued upon the direction of the land department is unassailable. But while the patentee holds the legal title, his equitable relations to other parties are not thereby affected. That title, with important qualifications hereafter mentioned, is as much subject to control as the title to land held by him derived from private sources. If one takes a title in his own name, while acting as agent, trustee, or guardian, or in any other fiduciary capacity, a court of equity will, upon a showing of the fact in an appropriate proceeding, subject the lands to proper trusts in his hands, or compel him to transfer the title to the party equitably entitled to it. Nor does it matter whether the party takes the title in his own name in good faith, under the belief that he can thereby better manage the property to the advantage of those for whom he is acting, or in compliance with their wishes, or whether from an intention to defraud them of their rights therein. In either case a court of equity will control the legal title so as to protect the just rights of the true owner. Townsend v. Greeley, 5 Wall. 326, 335; Estrade v. Murphy, 19 Cal. 248, 272. All this is but common knowledge, and the doctrine is constantly invoked for the protection of the rights of parties against the mistake, accident, orfraud of agents or parties acting in a fiduciary capacity; and little difficulty is experienced in enforcing it where the property held is not claimed under the adjudication of a court or other tribunal affirming the title of the holder; as, for instance, upon the determination of a department like that established >to supervise proceedings for the alienation of the public lands. In these latter cases the action of a court of equity is limited, so as not to interfere with the rightful exercise of the powers intrusted to the department. The conclusions of the department are not even then open to review for alleged errors in passing upon the weight of evidence presented, for that would be to make a court of equity a court of appeal from its decisons, which was never contemplated. But where the matters determined are not properly before the department, or its conclusions have been reached from a misconstruction by its officers of the law applicable to the cases before it, and it has thus denied to parties rights which, upon a correct construction, would have been conceded to them, or where misrepresentations and fraud have been practiced necessarily affecting its judgment, then the courts can, in a proper proceeding, interfere and control its determination so as to secure the just rights of parties injuriously affected. Quinby v. Conlan, 104 U. S. 420, 426; Baldwin v. Stark, 107 U. S. 463, 465, 2 Sup. Ct. Rep. 473. In such cases a court of equity only exercises its ordinary jurisdiction to prevent injustice from a misconstruction of the law or the machinations of fraud. The misconstruction referred to must be, as stated, of the law applicable to the case as established. Of this misconstruction we have an instance in Silver v. Ladd, 7 Wall. 219. where it was held by the commissioner of the general land-office and the secretary of the interior that tkhe donation act of Oregon did not allow an unmarried woman to take as a settler on the ground that she was not the head of a family. But this court decided that in this determination the officers misconstrued the law, and upon a bill in equity, filed by her son against subsequent patentees of the United States of the lands, held that relief should be afforded by directing a transfer of the title to him from such patentees. And the misrepresentations and fraud mentioned necessarily affecting the judgment of the department must be such as have prevented the unsuccessful party from fully presenting his case, or the officers of the government from fully considering it; such as have imposed upon its jurisdiction, or turned its attention from the real controversy. It must also appear that, but for such imposition and fraud, the determination would have been in favor of the plaintiff, and have entitled him to the patent for the land in dispute. Lee v. Johnson, 116 U. S. 49, 50, 6 Sup. Ct. Rep. 249; Sparks v. Pierce, 115 U. S. 408, 413, 6 Sup. Ct. Rep. 102; Vance v. Burbank, 101 U. S. 514, 519. The case at bar, upon the facts found, is brought fully within the law as thus declared. The defendant, in his original declaratory statement, did not include the premises in controversy as part of his pre-emption claim. It covered only adjoining land. Under the statute he could not make a second declaration for different property. Section 2261 of the Revised Statutes provides that 'no person shall be entitled to more than one pre-emption right by virtue of the provisions of section 2259; nor, where a party has filed his declaration of intention to claim the benefit of such provisions for one tract of land, he file, at any future time, a second declaration for another tract.' Section 2259 referred to designates who may be entitled to pre-emption. The inhibition of section 2261 is positive and unconditional. The tract applied for in the second declaration need not be an entirely separate and distinct parcel to call into effect the prohibition; it is enough if there be such addition to the original land applied for as to justify the designation of it, with the addition, as a different tract. With the filing of the first declaration the applicant is limited to the land designated, whether less or different from what he supposed he could claim, or what he may subsequently desire to acquire. The prohibition of the statute is without qualification or exception, and the rights of the pre-emptor must be measured by it Baldwin v. Stark, 107 U. S. 463, 466, 2 Sup. Ct. Rep. 473. Such has been the uniform ruling of the land department, except where a prior claim has prevented the completion of the original entry, or a mistake in the first declaration has occurred without the knowledge or any fault of the claimant.

2

In the Case of J. B. Raymond, 2 Dec. Dep. Int. 854, the claimant filed a declaratory statement in February, 1880, for a quarter section of land in Kansas, and in April, 1883, he applied to the local land-office for permission to make a second filing for the same land, alleging as a reason therefor that he had made valuable improvements on his claim, but, having failed to raise any crops on account of the drought, was unable to pay for the land within the time prescribed by law. He therefore desired to lile a second declaratory statement for the same land, for the better protection of his rights in the premises. The local land-office rejected the application, and the commissioner approved of the decision. Subsequently the claimant asked permission to file another declaration for the same or other land, but it met with a similar rejection, and the case on both applications was brought before the interior department, where the decision of the commissioner in both instances was affirmed. Mr. Teller, then secretary, held that the claimant's application to file a new declaration for other land was properly denied upon the second clause of the statute, and that his application to file for the same land was properly denied upon the first clause, he having attempted to exercise the one pre-emptive right which was alone permissible. In Allen v. Baird, 6 Dec. Dep. Int. 298, it appeared that Allen had made a declaratory statement for a tract of land as a pre-emptor, in March, 1883, although he had made such declaration for another tract in August, 1880. It was sought to avoid the former filing upon the ground that at the date thereof he was not 21 years of age, and hence the filing was a nullity, and no bar to a second one. The commissioner held that the second filing was illegal, and upon appeal to the interior department his decision was affirmed. In disposing of the case, Mr. LAMAR, then secretary, after observing that Allen had stated in his first filing that he was over 21 years of age, when he knew the statement was untrue, and that, the land being subject to settlement and entry, he could not be heard to allege that the first filing was illegal, said: 'The question of second filing was carefully considered by my predecessor, Secretary TELLER, in the Case of J. B. Raymond, 2 Dec. Dep. Int. 854, wherein it was held that under the provision of section 2261, Rev. St., a pre-emptor may file but one declaratory statement for land free to settlement and entry. This ruling has been uniformly followed, and the only exception is where the pre-emptor is unable to perfect his entry on account of some prior claim, and there is no fault on his part.' Reference is then made to other decisions of the department, and to the case of Baldwin v. Stark, cited above, where the positive and unconditional character of the inhibition of the statute is recognized by this court. In allowing the defendant in this case to amend his declaratory statement, the commissioner of the general land-office assumed a power which was not vested in him. No circumstances existed which prevented the first declaration form bringing into operation the express prohibition of the statute against a second one. The claimant knew perfectly the character and extent of the land originally claimed by him. He was at the time under no misapprehension on that subject. The commissioner, in allowing the amendment to cover a much larger tract than at first claimed, authorized a second declaration for a different tract, which was not permissible. If that officer was of the opinion that the statute did not apply to an amendment, thus enlarging the original declaration, he misconstrued its prvis ions. Without such enlargement, the premises in controveysy would not have been brought before the land department as a part of the claim of the defendant, and no obstacle would have been presented to the award of a patent to the plaintiff for the land. By the amendment, therefore, the department acquired no more jurisdiction to award to the defendant the tract not embraced by his original declaration than it had to award to him any other tract never entered by him as a pre-emptioner in the local land-office. Its subsequent action upon the additional tract could not defeat the rights of the plaintiff to the premises. Besides the want of authority in the commissioner to allow under the form of an amendment an enlargement of the pre-emption claim, the manner in which that officer was imposed upon taints the transaction as one of fraud and misrepresentation on the part of the claimant, by which material facts were concealed from the department. A court of equity has jurisdiction in such a case to compel the transfer to the plaintiff of property which, but for such fraud and misrepresentation, would have been awarded to him, and of which he was thereby wrongfully deprived. Decree affirmed.